Volume 1, Issue 2 pp. 143-153
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The Activity Rhythm of Blennius sanguinolentus Pallas*

an Adaptation to its Food Source?

Michael Taborsky

Michael Taborsky

Institut für Zoologie der Universität Wien, Dr.-Karl-Lueger-Ring 1, A-1010 Wien, Austria

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Dominique Limberger

Dominique Limberger

Max-Planck-Institut fur Verhaltensphysiologie, D-8131 Seewiesen, FRG (authors' present address)

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First published: June 1980
Citations: 31

*Taxonomy of the blennies and the correct generic name of the species “sanguinolentus” is not yet clear (Norman, 1943; Bath, 1977; Zander, 1978).

Abstract

Abstract. In the field, feeding activity of the algivorous Blennius sanguinolentus increased remarkably from morning to late afternoon. Swimming is evenly distributed; other behaviour does not fall into regular daily patterns. No association was found, save in extreme values, between the distribution of any activity and environmental factors measured simultaneously. We suggest that the feeding cycle is an adaptation to the metabolic properties of green algae, the staple diet of B. sanguinolentus. Activity distributions following predictable short-term fluctuations in food quality are expected to be found in other animals.

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